<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vue 过滤器</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>

<body>
    <div id="app">
        <p>{{message}}</p>
        <p>{{message|toUpper}}</p>
    </div>
    <script>
        var app = new Vue({
            el: "#app",
            data: {
                message: 'abcdefgh'
            },
            filters: {
                toUpper: function (value) {
                    return value.toUpperCase()
                }
            }
        })
    </script>
</body>

</html>
